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March 25, 2020

CT scan of Tiktaalik roseae's fin skeleton

A computed tomography scan of the late Devonian Tiktaalik roseae's fin skeleton showing its dorsal rays (yellow) and ventral rays (cyan).

[Research supported by National Science Foundation grants EAR 0207721, EAR 0544093, EAR 0208377 and EAR 0544565.]

Learn more about this research in the University of Chicago news story How fish fins evolved just before the transition to land. (Date image taken: unknown; date originally posted to NSF Multimedia Gallery: March 25, 2020)

Credit: Tom Stewart

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